Add separate Vibrato/Chorus LV2 plugin

.gitignore

@@ -35,6 +35,8 @@ DWARF
 /b_whirl/x42-whirl.exe
 /b_reverb/manifest.ttl
 /b_reverb/b_reverb.ttl
+/b_chorato/manifest.ttl
+/b_chorato/b_chorato.ttl
 /b_synth/manifest.ttl
 /b_synth/manifest.ttl
 /b_synth/b_synth.ttl

Makefile

@@ -17,7 +17,7 @@ endif
 ifneq ($(MOD),)
   SUBDIRS = b_whirl b_synth
 else
-  SUBDIRS = b_overdrive b_whirl b_reverb b_conv src b_synth ui
+  SUBDIRS = b_overdrive b_whirl b_reverb b_conv b_chorato src b_synth ui
 endif
 
 default: all

b_chorato/Makefile

@@ -0,0 +1,47 @@
+include ../common.mak
+include ../git2lv2.mk
+
+LOADLIBES = -lm
+override CFLAGS+= -I../src
+override CFLAGS+=`pkg-config --cflags lv2` -fvisibility=hidden
+
+targets=
+
+LV2NAME=b_chorato
+
+ifeq ($(LV2AVAIL), yes)
+  targets+=lv2
+endif
+
+all: $(targets)
+
+lv2: manifest.ttl $(LV2NAME)$(LIB_EXT) $(LV2NAME).ttl
+
+manifest.ttl:
+	sed "s/@LV2NAME@/$(LV2NAME)/;s/@LIB_EXT@/$(LIB_EXT)/" manifest.ttl.in > manifest.ttl
+
+$(LV2NAME).ttl: $(LV2NAME).ttl.in Makefile
+	sed "s/@VERSION@/lv2:microVersion $(LV2MIC) ;lv2:minorVersion $(LV2MIN) ;/g" \
+		$(LV2NAME).ttl.in > $(LV2NAME).ttl
+
+$(LV2NAME)$(LIB_EXT): lv2.c ../src/vibrato.c ../src/vibrato.h
+	$(CC) $(CPPFLAGS) $(CFLAGS) \
+		-o $(LV2NAME)$(LIB_EXT) lv2.c ../src/vibrato.c \
+	  -shared $(LV2LDFLAGS) $(LDFLAGS)
+
+install: $(targets)
+ifeq ($(LV2AVAIL), yes)
+	install -d $(DESTDIR)$(lv2dir)/$(LV2NAME)
+	install -m755 $(LV2NAME)$(LIB_EXT) $(DESTDIR)$(lv2dir)/$(LV2NAME)
+	install -m644 manifest.ttl $(LV2NAME).ttl $(DESTDIR)$(lv2dir)/$(LV2NAME)
+endif
+
+uninstall:
+	rm -f $(DESTDIR)$(lv2dir)/$(LV2NAME)/*.ttl
+	rm -f $(DESTDIR)$(lv2dir)/$(LV2NAME)/$(LV2NAME)$(LIB_EXT)
+	-rmdir $(DESTDIR)$(lv2dir)/$(LV2NAME)
+
+clean:
+	rm -f *.o manifest.ttl $(LV2NAME)$(LIB_EXT) $(LV2NAME).ttl
+
+.PHONY: clean all install uninstall lv2

b_chorato/b_chorato.ttl.in

@@ -0,0 +1,64 @@
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix units: <http://lv2plug.in/ns/extensions/units#> .
+
+<http://gareus.org/rgareus#me>
+	a foaf:Person ;
+	foaf:name "Robin Gareus" ;
+	foaf:mbox <mailto:robin@gareus.org> ;
+	foaf:homepage <http://gareus.org/> .
+
+<http://gareus.org/oss/lv2/b_chorato>
+	a doap:Project, lv2:Plugin, lv2:SpatialPlugin ;
+	doap:maintainer <http://gareus.org/rgareus#me> ;
+	doap:name "setBfree Chorus/Vibrato";
+	doap:license <http://usefulinc.com/doap/licenses/gpl> ;
+	@VERSION@
+	lv2:optionalFeature lv2:hardRTCapable ;
+	lv2:port
+	[
+		a lv2:AudioPort ,
+			lv2:InputPort ;
+		lv2:index 0 ;
+		lv2:symbol "in" ;
+		lv2:name "In"
+	],
+	[
+		a lv2:AudioPort ,
+			lv2:OutputPort ;
+		lv2:index 1 ;
+		lv2:symbol "out" ;
+		lv2:name "Out"
+	],
+	[
+		a lv2:InputPort ,
+			lv2:ControlPort ;
+		lv2:index 2 ;
+		lv2:symbol "mode" ;
+		lv2:name "Vibrato/Chorus Modulation";
+		lv2:portProperty lv2:integer, lv2:enumeration ;
+		lv2:default 0;
+		lv2:minimum 0;
+		lv2:maximum 5;
+		lv2:scalePoint [ rdfs:label "V1"; rdf:value 0 ; ] ;
+		lv2:scalePoint [ rdfs:label "C1"; rdf:value 1 ; ] ;
+		lv2:scalePoint [ rdfs:label "V2"; rdf:value 2 ; ] ;
+		lv2:scalePoint [ rdfs:label "C2"; rdf:value 3 ; ] ;
+		lv2:scalePoint [ rdfs:label "V3"; rdf:value 4 ; ] ;
+		lv2:scalePoint [ rdfs:label "C3"; rdf:value 5 ; ] ;
+	],
+	[
+		a lv2:InputPort ,
+			lv2:ControlPort ;
+		lv2:index 3 ;
+		lv2:symbol "Speed" ;
+		lv2:name "Frequency of the scanner";
+		units:unit units:hz;
+		lv2:default 7.5;
+		lv2:minimum 2;
+		lv2:maximum 20;
+	] ;
+	.

b_chorato/lv2.c

@@ -0,0 +1,215 @@
+/* setBfree - Chorus/Vibrato Plugin
+ *
+ * Copyright (C) 2018 Robin Gareus <robin@gareus.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "vibrato.h"
+
+double SampleRateD = 48000.0; // global
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#define B3V_URI "http://gareus.org/oss/lv2/b_chorato"
+
+typedef enum {
+	B3V_INPUT    = 0,
+	B3V_OUTPUT,
+	B3V_MODE,
+	B3V_FREQ,
+} PortIndex;
+
+typedef struct {
+	float* input;
+	float* output;
+	float* mode;
+	float* freq;
+	struct b_vibrato* instance;
+} B3V;
+
+static LV2_Handle
+instantiate (const LV2_Descriptor*     descriptor,
+             double                    rate,
+             const char*               bundle_path,
+             const LV2_Feature* const* features)
+{
+	B3V* b3v = (B3V*)calloc (1, sizeof (B3V));
+	if (!b3v) {
+		return NULL;
+	}
+
+	b3v->instance = (struct b_vibrato*)calloc (1, sizeof (struct b_vibrato));
+	if (!b3v->instance) {
+		free (b3v);
+		return NULL;
+	}
+
+	SampleRateD = rate;
+	reset_vibrato (b3v->instance);
+	init_vibrato (b3v->instance);
+
+	return (LV2_Handle)b3v;
+}
+
+static void
+connect_port (LV2_Handle instance,
+              uint32_t   port,
+              void*      data)
+{
+	B3V* b3v = (B3V*)instance;
+
+	switch ((PortIndex)port) {
+		case B3V_INPUT:
+			b3v->input = (float*)data;
+			break;
+		case B3V_OUTPUT:
+			b3v->output = (float*)data;
+			break;
+		case B3V_MODE:
+			b3v->mode = (float*)data;
+			break;
+		case B3V_FREQ:
+			b3v->freq = (float*)data;
+			break;
+	}
+}
+
+static void
+activate (LV2_Handle instance)
+{
+}
+
+static void
+run (LV2_Handle instance, uint32_t n_samples)
+{
+	B3V* b3v = (B3V*)instance;
+	struct b_vibrato* v = b3v->instance;
+
+	int mode = rint (*(b3v->mode));
+	switch (mode) {
+		default:
+		case 0:
+		case 1:
+			v->offsetTable   = v->offset1Table;
+			break;
+		case 2:
+		case 3:
+			v->offsetTable   = v->offset2Table;
+			break;
+		case 4:
+		case 5:
+			v->offsetTable   = v->offset3Table;
+			break;
+	}
+	v->effectEnabled = 1;
+	v->mixedBuffers = mode & 1; /* chorus */
+
+	v->vibFqHertz = *(b3v->freq);
+	v->statorIncrement =
+		(unsigned int)(((v->vibFqHertz * INCTBL_SIZE) / SampleRateD) * 65536.0);
+
+	vibratoProc (v, b3v->input, b3v->output, n_samples);
+}
+
+static void
+deactivate (LV2_Handle instance)
+{
+}
+
+static void
+cleanup (LV2_Handle instance)
+{
+	B3V* b3v = (B3V*)instance;
+	free (b3v->instance);
+	free (instance);
+}
+
+const void*
+extension_data (const char* uri)
+{
+	return NULL;
+}
+
+static const LV2_Descriptor descriptor = {
+	B3V_URI,
+	instantiate,
+	connect_port,
+	activate,
+	run,
+	deactivate,
+	cleanup,
+	extension_data
+};
+
+// fix for -fvisibility=hidden
+#undef LV2_SYMBOL_EXPORT
+#ifdef _WIN32
+#define LV2_SYMBOL_EXPORT __declspec(dllexport)
+#else
+#define LV2_SYMBOL_EXPORT __attribute__ ((visibility ("default")))
+#endif
+
+LV2_SYMBOL_EXPORT
+const LV2_Descriptor*
+lv2_descriptor (uint32_t index)
+{
+	switch (index) {
+		case 0:
+			return &descriptor;
+		default:
+			return NULL;
+	}
+}
+
+#include <assert.h>
+
+void
+setVibratoLower (void* t, int isEnabled)
+{
+	assert (0);
+}
+void
+setVibratoUpper (void* t, int isEnabled)
+{
+	assert (0);
+}
+int
+getVibratoRouting (void* t)
+{
+	assert (0);
+	return 0;
+}
+void
+notifyControlChangeByName (void* mcfg, const char* cfname, unsigned char val)
+{
+}
+void
+useMIDIControlFunction (void* m, const char* cfname, void (*f) (void* d, unsigned char), void* d)
+{
+}
+int
+getConfigParameter_dr (const char* par, ConfigContext* cfg, double* dp, double lowInc, double highInc)
+{
+	return 0;
+}
+int
+getConfigParameter_d (const char* par, ConfigContext* cfg, double* dp)
+{
+	return 0;
+}

b_chorato/manifest.ttl.in

@@ -0,0 +1,7 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://gareus.org/oss/lv2/b_chorato>
+	a lv2:Plugin ;
+	lv2:binary <b_chorato@LIB_EXT@>  ;
+	rdfs:seeAlso <b_chorato.ttl> .